Precision Mass Measurements of 129-131Cd and Their Impact on Stellar Nucleosynthesis via the Rapid Neutron Capture Process

被引：64

作者：

Atanasov, D. ^{[1
]}

Ascher, P. ^{[1
]}

Blaum, K. ^{[1
]}

Cakirli, R. B. ^{[2
]}

Cocolios, T. E. ^{[3
]}

George, S. ^{[1
]}

Goriely, S. ^{[4
]}

Herfurth, F. ^{[5
]}

Janka, H. -T. ^{[6
]}

Just, O. ^{[6
]}

Kowalska, M. ^{[7
]}

Kreim, S. ^{[1
,7
]}

Kisler, D. ^{[1
]}

Litvinov, Yu. A. ^{[1
,5
]}

Lunney, D. ^{[8
]}

Manea, V. ^{[8
]}

Neidherr, D. ^{[5
]}

Rosenbusch, M. ^{[9
]}

Schweikhard, L. ^{[9
]}

Welker, A. ^{[10
]}

Wienholtz, F. ^{[9
]}

Wolf, R. N. ^{[1
]}

Zuber, K. ^{[10
]}

机构：

[1] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

[2] Istanbul Univ, Dept Phys, TR-34134 Istanbul, Turkey

[3] Univ Manchester, Manchester M13 9PL, Lancs, England

[4] Univ Libre Bruxelles, Inst Astron & Astrophys, B-1050 Brussels, Belgium

[5] GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany

[6] Max Planck Inst Astrophys, D-85741 Garching, Germany

[7] CERN, CH-1211 Geneva, Switzerland

[8] Univ Paris 11, IN2P3, CNRS, CSNSM, F-91405 Orsay, France

[9] Ernst Moritz Arndt Univ Greifswald, Inst Phys, D-17487 Greifswald, Germany

[10] Tech Univ Dresden, D-01069 Dresden, Germany

来源：

PHYSICAL REVIEW LETTERS | 2015年 / 115卷 / 23期

基金：

美国国家科学基金会;

关键词：

R-PROCESS; STAR MERGERS; ION-BEAM; SPECTROMETRY; ELEMENTS; ISOTOPES; TRAPS;

D O I：

10.1103/PhysRevLett.115.232501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Masses adjacent to the classical waiting-point nuclide Cd-130 have been measured by using the Penningtrap spectrometer ISOLTRAP at ISOLDE/CERN. We find a significant deviation of over 400 keV from earlier values evaluated by using nuclear beta-decay data. The new measurements show the reduction of the N = 82 shell gap below the doubly magic Sn-132. The nucleosynthesis associated with the ejected wind from type-II supernovae as well as from compact object binary mergers is studied, by using state-of-the-art hydrodynamic simulations. We find a consistent and direct impact of the newly measured masses on the calculated abundances in the A = 128-132 region and a reduction of the uncertainties from the precision mass input data.

引用

页数：6

共 5 条

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[5] New neutron capture and transmission measurements for Ba-134,Ba-136 at ORELA and their impact on s-process nucleosynthesis calculations
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